package com.itheima.reggie.service.Impl;

import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {

    @Autowired
    private DishService dishService;

    @Autowired
    private SetmealService setmealService;

    @Override
    public void remove(Long id) {
        LambdaQueryWrapper<Dish> qw1=new LambdaQueryWrapper<>();
        qw1.eq(Dish::getCategoryId,id);
        if ((dishService.count(qw1)>0)){
            throw new CustomException("当前分类下关联了菜品，不能删除");
        }

        LambdaQueryWrapper<Setmeal> qw2=new LambdaQueryWrapper<>();
        qw2.eq(Setmeal::getCategoryId,id);
        if ((setmealService.count(qw2)>0)){
            throw new CustomException("当前分类下关联了菜品，不能删除");
        }

        super.removeById(id);
    }
}
